Nervous as f**k, deja-vu
Turbo Mini Forums

Compression ratio ? Boost run ?

WWW.TURBO-MINI.COM

open the map in a window hit "print scrn" button (above teh cursors) open paint, hit edit and paste. then crop and save the picture and upload it :)

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

Or if you have Vista you may have a program called "Snipping Tool" which helps you capture the bit you want.

Cr is believed to be iro 8.5:1, head has 28cc +20 pistons with 10cc dish, std stroke. Have checked the peak boost read out on my boost controller and it reads 14.2 pound.

Lady luck has well and truely desertyed me, lol
Cheers
Shane

Is 28 deg not a bit much advance in the full boost sites at 4-6000rpm??

Will retrive the MJ map off the ecu, looking at it I may of shown you the incorrect map.
Sorry chaps
Shane

Edited by Star Mag on 15th Jul, 2009.

Don't forget with the cast omegas your 40 thou down the bore with a stock deck height. From my calcs you might be a bit lower than 8.5:1, not that this post really helps you much of course! Really sorry for you!:(

maybe those will be ok ? i hope!
thanks for the races we had shane.
28 does seem a lot ,id expect more in the region of 24 ish .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

An absolute pleasure Robert, wa a hoot.

i'm sure ray had you set it to 26 shane.

He did, but if you recall we upped it a little and lost power so reduced it? Or am I being a C**T as normal?
Shane

in the nicest way mate, that map's basic at best, even if the max advance is correct your definately not making the best of the engine. though if the max advance is indeed det-free then the map shouldnt have done any harm..

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

That looks very much like Jackmans did after his trip back from IMM Denmark. That was pre ignition after unknowingly putting 92 unleaded in an engine best suited for 97 and a minimum of 95. Spark plug had melted.

The crown of the piston has got so hot that it has expanded and started to sieze in the bore, only at the very top. only seems to happen along the pin axis where there is obviously more material around the pin to expand.

Has it left any metal on the top of the bore?

Pre ignition could be as a result of high dynamic compression ratio and high inlet charge temps, 28 total advance seems a bit much, no? Im running 31 on my NA motor. I supose it depends on your CR and boost.

I really do feel for you mate, but I dont think its terninal, I cleaned up Jackmans pistons and they are still running now.

long as your aware mate :) try get yourself a wideband, could be some kidn of issue on transition, gearchanges, acceleration etc that affect the fueling on teh road but cannot be replicated on the dyno. really hope the pistons are salvageable, if its any conselation, i have absolutely destroyed a piston liner and conrod and im sure were no the only casualties. chin up :)

turbo 16v k-series 11.9@118.9 :)

Denis O'Brien.

Thats a good effort dennis! but not supprising concidering you out put!

Right, have copied the map from the MJ, minus all values by two degrees for the inacuracy of the vr position. I hosestly have no ide where I pulled the other map from.
Gonna rip the block out and tear down on Sat afternoon. Funds are going to be the big issue again, and yet again a tight deadline.
Cheers
Shane

what are you going to do for pistons this time?

another set of omega's?

Yes, hopefully. But depends on the cash situation, at the moment it all hinges on two things, damaged caused and pay day. Reluctant to throw another wedge of notes at it for the two and a half months left this year it will be on the road?
Shane

just go with the 21253's and have them machined dude, if it all goes tits up again at least they're cheapest ones about.

I run them with no issues and so did nic.

I appreciate what your saying nick, but after seeing the difference in quality between the mega range and the omegas, im reluctant to fit a cheap piston. I know I have had faiures with both but the omegas went due to poor quality. Tho £90 a set is temting, but then its finding a stockist then getting them machiened, with the omegas I know MED have them on the shelf.
Shane

I Have ben looking at widebands but have confused th hell out of myself, using th search button only made it worse. do I need a laptop or interface with it to work or can I just fit one and monitor, sorry for my ignorance on the subject.
Cheers
Shane

just get a gauge that lives in the dash and be done

I can recommend the Stack one, it has lots of pretty knight rider style lights

is this Ray guy supposed to be good?

If so, how can he map a megajolt for a turbo engine 1D???

you would have gotten the same result with a dizzy without vacuum...